Results 61 to 70 of about 1,723 (181)
Journal of Geophysical Research: Machine Learning and Computation, Volume 3, Issue 4, August 2026.Abstract Rapid and reliable coastal inundation mapping from Synthetic Aperture Radar (SAR) imagery is vital for disaster response. Although recent deep learning advances have enhanced this task's accuracy and automation, two major challenges remain: (a) geographic and imaging variations across flood events limit the generalizability of supervised ...
Wantai Chen +3 more
wiley +1 more source
Engineering Science and Technology, an International Journal, 2016 This work presents and estimates the break-lock in phase locked loop (PLL) synthesizers for monopulse radar applications through experimental measurements and computer simulation.
Harikrishna Paik +2 more
doaj +1 more source
Design of an antenna array for a LFM-CW synthetic aperture radar prototype
Dyna, 2020 This paper deals with the design of two identical 1 × 4 patch antenna arrays for a linear frequency modulated (LFM) continuous wave (CW) synthetic aperture radar (SAR) prototype.
Alfonso José Zozaya +1 more
doaj +1 more source
Geophysical Research Letters, Volume 53, Issue 14, 28 July 2026.Abstract Observational constraints on the vertical microphysical evolution of mixed‐phase precipitation across the melting layer over the high‐altitude of southeastern Tibetan Plateau remain scarce. Using collocated two‐dimensional video disdrometer and Micro Rain Radar measurements in rainy seasons of 2022–2025, we characterize the vertical ...
Xin Xu +3 more
wiley +1 more source
Journal of Geophysical Research: Atmospheres, Volume 131, Issue 13, 16 July 2026.Abstract To improve numerical prediction of mountain‐to‐plain (MTP) convection over the Beijing region, this study uses the MPAS–JEDI four‐dimensional ensemble‐variational (4DEnVar) data assimilation system on a global 3–60 km variable‐resolution mesh to evaluate assimilation strategies for radiances from the Advanced Microwave Sounding Unit‐A (AMSU‐A)
W. J. Cheng, L. K. Ran
wiley +1 more source
A Vast Valley Network Beneath the Greenland Ice Sheet
Geophysical Research Letters, Volume 53, Issue 13, 16 July 2026.Abstract Mapping subglacial topography along the margin of the Greenland Ice Sheet was revolutionized by reconciling measurements of ice thickness and surface velocity using the principle of mass conservation. Despite evidence that many subglacial valleys resolved by that method extend upstream, it cannot be applied to the ice sheet's slower‐flowing ...
Allison M. Chartrand +6 more
wiley +1 more source
Design of direct wave cancellation system for high-frequency CW radar
The Journal of Engineering, 2019 When high-frequency continuous wave (HFCW) radars transmit linear frequency modulated (LFM) continuous wave, there will be direct wave (DW) interference due to temporal continuity.
Nan Shang +3 more
doaj +1 more source
Contactless Heart and Respiration Rates Estimation and Classification of Driver Physiological States Using CW Radar and Temporal Neural Networks. [PDF]
Sensors (Basel), 2023 El Abbaoui A, Sodoyer D, Elbahhar F.
europepmc +1 more source
SIMULATION MODEL OF RADAR IMAGING TECHNIQUE WITH MODIFIED CW-LFM SAR
Information and Telecommunication SciencesBackground. Modern synthetic aperture radar (SAR) systems are crucial for Earth observation, especially in conditions where traditional optical systems fail, such as low visibility or adverse weather. Continuous wave linearly frequency modulated (CW-LFM)
Volodymyr Pavlikov +4 more
doaj +1 more source
A Study on Interference Cancellation in a FM-CW Radar
The Journal of the Korean Institute of Information and Communication Engineering, 2012 Two separate antennas are usually adopted in high performance radar systems to achieve the high degree of isolation since the transmission and reception of signals cannot be separated in time. However, even though two spatially separated antennas are installed in the system, strong signals from a transmission antenna can cause the serious interference ...
Jong-Gil Lee, Chang-Ki Lee
openaire +2 more sources